Terminal apparatus, base station apparatus, and communication method

A base station apparatus comprising:

• control circuitry configured to select between a first determination method and a second determination method for determining a size of a transport block in a Physical Uplink Shared Channel (PUSCH) based on a value of a time domain resource assignment field included in a Downlink Control Information (DCI) format for scheduling the PUSCH;
• and
• reception circuitry configured to receive the PUSCH, wherein:
• in the first determination method, a number of resource elements (NRE) for determining the size of the transport block is calculated according to a first equation:
• NRE=min(156, NaRE)·nPRB,
• in the second determination method, the NRE for determining the size of the transport block is calculated according to a second equation:
• NRE=min(156, NaRE)·nPRB·y,
• wherein y is provided by a Radio Resource Control (RRC) parameter,
• a value for a rate matching output sequence length for Uplink Control Information (UCI) on the PUSCH is determined, for determining the size of the transport block, by selecting between a first calculation and a second calculation,
• in a case that the first determination method is applied, the first calculation of the value uses a first scaling factor, and
• in a case that the second determination method is applied, the second calculation of the value uses a second scaling factor different from the first scaling factor,
• the NaRE is a value for determining the first NRE or the second NRE, and
• the nPRB is a number of resource blocks assigned for the PUSCH.

A communication method performed by a terminal apparatus, the communication method comprising:

• selecting between a first determination method and a second determination method for determining a size of a transport block in a Physical Uplink Shared Channel (PUSCH) based on a value of a time domain resource assignment field included in a Downlink Control Information (DCI) format for scheduling the PUSCH;
• and
• transmitting the PUSCH, wherein:
• in the first determination method, a number of resource elements (NRE) for determining the size of the transport block is calculated according to a first equation:
• NRE=min(156, NaRE)·nPRB,
• in the second determination method, the NRE for determining the size of the transport block is calculated according to a second equation:
• NRE=min(156, NaRE)·nPRB·y,
• wherein y is provided by a Radio Resource Control (RRC) parameter,
• a value for a rate matching output sequence length for Uplink Control Information (UCI) on the PUSCH is determined, for determining the size of the transport block, by selecting between a first calculation and a second calculation,
• in a case that the first determination method is applied, the first calculation of the value uses a first scaling factor, and
• in a case that the second determination method is applied, the second calculation of the value uses a second scaling factor different from the first scaling factor,
• the NaRE is a value for determining the first NRE or the second NRE, and
• the nPRB is a number of resource blocks assigned for the PUSCH.